linux-kernel - [PATCH] mm/mempolicy: count MPOL_WEIGHTED_INTERLEAVE to "interleave

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Message-ID: <20241227095737.645-1-honggyu.kim@sk.com>
Date: Fri, 27 Dec 2024 18:57:37 +0900
From: Honggyu Kim <honggyu.kim@...com>
To: Gregory Price <gourry@...rry.net>
Cc: linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	kernel_team@...ynix.com,
	Honggyu Kim <honggyu.kim@...com>,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH] mm/mempolicy: count MPOL_WEIGHTED_INTERLEAVE to "interleave_hit"

The fa3bea4e1f82 introduced MPOL_WEIGHTED_INTERLEAVE but it missed
adding its counter to "interleave_hit" of numastat, which is located at
/sys/devices/system/node/nodeN/ directory.

It'd be better to add weighted interleving counter info to the existing
"interleave_hit" instead of introducing a new counter
"weighted_interleave_hit".

Fixes: fa3bea4e1f82 ("mm/mempolicy: introduce MPOL_WEIGHTED_INTERLEAVE for weighted interleaving")
Cc: Gregory Price <gourry@...rry.net>
Cc: Andi Kleen <ak@...ux.intel.com>
Signed-off-by: Honggyu Kim <honggyu.kim@...com>
---
 mm/mempolicy.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 04f35659717a..162407fbf2bc 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2268,7 +2268,8 @@ struct page *alloc_pages_mpol_noprof(gfp_t gfp, unsigned int order,
 
 	page = __alloc_pages_noprof(gfp, order, nid, nodemask);
 
-	if (unlikely(pol->mode == MPOL_INTERLEAVE) && page) {
+	if (unlikely(pol->mode == MPOL_INTERLEAVE ||
+		     pol->mode == MPOL_WEIGHTED_INTERLEAVE) && page) {
 		/* skip NUMA_INTERLEAVE_HIT update if numa stats is disabled */
 		if (static_branch_likely(&vm_numa_stat_key) &&
 		    page_to_nid(page) == nid) {

base-commit: 4bbf9020becbfd8fc2c3da790855b7042fad455b
-- 
2.34.1